CAJ | 학술논문

将耐性植物芥蓝（Brassica capitata）与敏感植物小白菜（Brassica chinensis）暴露于含Pb的营养液中，通过添加磷灰石矿尾料（PR）、重过磷酸钙（TSP）及二者混合物（P+T）处理，研究含磷物质对两种植物吸收Pb的影响以及Pb在植物根表面形态变化过程。结果显示：添加含磷物质降低了耐性植物芥蓝根部Pb的含量，但对地上部Pb吸收的影响不显著；对敏感植物小白菜来说，PR和P+T处理的植物根部及地上部Pb的含量与对照基本一致，而TSP处理促进了Pb的吸收，表现出小白菜根部及地上部Pb的含量显著高于对照组。含磷物质添加诱导了Pb在植物根表面形成Pb5（PO4）3Cl、Pb5（PO4）3OH的沉淀，但这并没有直接导致两种植物对Pb吸收量的减少。
장내성식물개람（Brassica capitata）여민감식물소백채（Brassica chinensis）폭로우함Pb적영양액중，통과첨가린회석광미료（PR）、중과린산개（TSP）급이자혼합물（P+T）처리，연구함린물질대량충식물흡수Pb적영향이급Pb재식물근표면형태변화과정。결과현시：첨가함린물질강저료내성식물개람근부Pb적함량，단대지상부Pb흡수적영향불현저；대민감식물소백채래설，PR화P+T처리적식물근부급지상부Pb적함량여대조기본일치，이TSP처리촉진료Pb적흡수，표현출소백채근부급지상부Pb적함량현저고우대조조。함린물질첨가유도료Pb재식물근표면형성Pb5（PO4）3Cl、Pb5（PO4）3OH적침정，단저병몰유직접도치량충식물대Pb흡수량적감소。
Lead-tolerant plant kale(Brassica capitata)and Pb-sensitive plant Chinese cabbage(Brassica chinensis)were exposed to nutri-ent solution containing Pb to examine the transformation of Pb on root surface and Pb uptake by plants after adding phosphate rock tailing (PR), triple superphosphate fertilizer(TSP)and their combination(P+T)to the solution. Applying phosphorous-containing substances en-hanced phosphorous uptake in roots and shoot of Chinese cabbage and roots of kale, with effects being TSP﹥P+T﹥PR, but had no effect on shoot phosphorous in kale. Lead concentrations in roots of tolerant kale were reduced, but those in shoot were not significantly affected by additions of phosphorous-containing substances. For Chinese cabbage, PR and P+T treatments had little effect on Pb concentrations in both root and shoot, while applying TSP enhanced Pb uptake. Additions of phosphorous- containing substances induced formations of Pb5(PO4)3Cl and Pb5(PO4)3OH on the surface of plant roots. However, this was in no position to directly reduce Pb absorption by plants.